The Sport Relief marathon continues with more from Smithy and Question of Sport, while The Choir's Gareth Malone faces a race against time to train 20 Olympic and Paralympic heroes to perform a special song live on the night. There's also an appearance from the Dragons before more spectacular sporting entertainment, all in the name of Sport Relief. Donate to Sport Relief by calling 03457 910 910 (Standard geographic charges from landlines and mobiles will apply) Or go online to www.bbc.co.uk/sportrelief . You can also use Red Button on the night and the weekend of Sport Relief. There will also be a late night text option on the night.